Hot rolled steel refers to steel that has been processed through the hot rolling process at high temperatures.

Hot rolling is the process of placing a billet into a hot rolling mill after preheating, where the billet is extruded and stretched at high temperatures to gradually form steel of a certain shape and size.

The surface of hot rolled steel coil is rougher than that of cold rolled steel, but its mechanical properties and formability are better than that of cold rolled steel.

1. Different compositions and properties: special steel and ordinary steel are different levels of steel, with different compositions and properties. Usually, special steel has a special chemical composition and excellent characteristics, while ordinary steel is a general performance of steel.

2. Different application scope: with the acceleration of industrialization, special steel is more and more widely used in various fields. And hot rolled is mainly used in construction, machinery manufacturing and other fields.

3. Different manufacturing processes: special steel manufacturing process is more complex, need to invest a lot of human and material resources. Hot rolled steel sheet in coil is simply processed through the hot rolling process.

In the field of construction, hot rolled steel is mainly used to manufacture steel components, steel plates and other building materials, with strong load-bearing capacity, stable performance and other advantages.

In the field of machinery manufacturing, hot rolled steel is mainly used to manufacture large-scale machines, equipment and tools.